Clinical Oncology

[Viral infections during oncotherapy ]

ARÁNYI Zsuzsanna

SEPTEMBER 10, 2017

Clinical Oncology - 2017;4(03)

[Immunosuppressive therapies, which were used in the past few years, have been causing different kinds of immunosuppression. In case of impaired cellular immunity, there is an increased risk of having the reactivation of latent viral infections. Certain viral infections or viral reactivations can be life threatening for patients with malignant diseases. Mild viral infections during chemotherapy can also disadvance the tumor therapy, which could affect the chance of recovery in a negative way. This is the reason, why the possibility of carrying viral infections or viral reactivations should be taken into consideration even in patients with solid tumor. Due to this, risk adaptive prevention strategies, and in certain cases, early antiviral therapies are needed.]

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[Ovarian cancer remains the most lethal gynaecological cancer and most patients present with advanced FIGO stage disease. Despite optimal upfront surgery and the administration of front-line paclitaxel-carboplatin chemotherapy, approximately two-third of ovarian cancer patients will relapse in the fi rst 3 years. In the last years, the goal in the treatment of ovarian cancer has shifted to maintenance therapy, trying to extend the progression free intervals of the patients. Remarkable advances in the knowledge of molecular biology of relapses led to the introduction the combination of antiangiogenic agent bevacizumab and chemotherapy, which showed to be effective in all phases of the disease, in fi rst-line therapy, as maintenance therapy, and in platinum-sensitive and platinum-resistant recurrence as well. Very recently, a new maintenance therapy, olaparib monotherapy has been introduced into clinical practice to treat platinum-sensitive, relapsed, high-grade serous ovarian cancer. Despite progresses in this therapy, are still some areas of controversy on how to manage epithelial ovarian cancer relapses. The aim of this manuscript is to give an overview on the management of relapsed ovarian cancer in the context of new available therapeutic modalities.]

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[The incidence of melanoma is increasing, and although most of the melanomas are diagnosed at low tumour thickness, the number of metastatic cases is also increasing. In systemic treatment of metastatic and/or unresectable melanoma, targeted molecular inhibitor or immunotherapy can be used as fi rst-line option depending on molecular pathological report. Targeted treatment results in rapid decrease of tumour burden in high percentage of cases; however, the loss of effect is also frequent due to acquired drug resistance. Further improvement on prognosis of metastatic disease is expected from proper sequencing and/or combination of targeted and immunotherapy.]

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[The renal cell cancer is among the ten most frequent cancers in developed countries. Its inci dence rate continuously increased until recently. On the other hand, survival parameters of renal cell cancer patients considerably improved in the last decade due to early diagnosis and developments in the treatment of irresectable disease. Huge progress had been made in understanding of the biological background of this chemo- and radiotherapy resistant disease, leading to the introduction of drugs in fi rst and further line treatment acting on VEGF and mTOR signal transduction pathways. Simultaneously, the era of widespread cytokine treatments had been ended. Recent studies had ensured the introduction of several drugs with new mechanism of action (MET, AXL; FGFR, PD-1 inhibition) into the therapy; these new advances completely changed the treatment landscape of RCC further improving progression free and overall survival. In this publication a review of data regarding the targeted treatment of clear cell renal cancer will be provided and as of our recent knowledge therapeutic positions of different drugs used will be discussed.]

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[The Cancer Genome Atlas Research Network recently proposed a molecular classifi cation for gastric cancer (GC) into four subtypes based on comprehensive evaluation. While the mechanisms of molecular targeted therapies in GC were confi rmed by multiple clinical studies, only a limited number of therapeutics for GC have been approved to date. In this systematic review of the available literature, we discuss the completed and ongoing clinical trials of molecular targeted therapies in patients with GC, with a focus on their effi cacy and safety. Results of recent studies clearly demonstrated that trastuzumab and ramucirumab, monoclonal antibodies (mAbs) against human epidermal growth factor receptor 2 (HER2) and vascular endothelial growth factor (VEGF), respectively, improved overall survival (OS) in GC with manageable safety profi les. Careful surveillance of ongoing clinical trials and timely profi ling and monitoring of genetic signatures are imperative to establish a strong foundation for precision medicine in GC.]

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